diff options
Diffstat (limited to 'source4/heimdal/lib/krb5/salt-arcfour.c')
-rw-r--r-- | source4/heimdal/lib/krb5/salt-arcfour.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/source4/heimdal/lib/krb5/salt-arcfour.c b/source4/heimdal/lib/krb5/salt-arcfour.c new file mode 100644 index 0000000000..b222b47e16 --- /dev/null +++ b/source4/heimdal/lib/krb5/salt-arcfour.c @@ -0,0 +1,112 @@ +/* + * Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "krb5_locl.h" + +static krb5_error_code +ARCFOUR_string_to_key(krb5_context context, + krb5_enctype enctype, + krb5_data password, + krb5_salt salt, + krb5_data opaque, + krb5_keyblock *key) +{ + krb5_error_code ret; + uint16_t *s = NULL; + size_t len, i; + EVP_MD_CTX *m; + + m = EVP_MD_CTX_create(); + if (m == NULL) { + ret = ENOMEM; + krb5_set_error_message(context, ret, N_("malloc: out of memory", "")); + goto out; + } + + EVP_DigestInit_ex(m, EVP_md4(), NULL); + + ret = wind_utf8ucs2_length(password.data, &len); + if (ret) { + krb5_set_error_message (context, ret, + N_("Password not an UCS2 string", "")); + goto out; + } + + s = malloc (len * sizeof(s[0])); + if (len != 0 && s == NULL) { + krb5_set_error_message (context, ENOMEM, + N_("malloc: out of memory", "")); + ret = ENOMEM; + goto out; + } + + ret = wind_utf8ucs2(password.data, s, &len); + if (ret) { + krb5_set_error_message (context, ret, + N_("Password not an UCS2 string", "")); + goto out; + } + + /* LE encoding */ + for (i = 0; i < len; i++) { + unsigned char p; + p = (s[i] & 0xff); + EVP_DigestUpdate (m, &p, 1); + p = (s[i] >> 8) & 0xff; + EVP_DigestUpdate (m, &p, 1); + } + + key->keytype = enctype; + ret = krb5_data_alloc (&key->keyvalue, 16); + if (ret) { + krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", "")); + goto out; + } + EVP_DigestFinal_ex (m, key->keyvalue.data, NULL); + + out: + EVP_MD_CTX_destroy(m); + if (s) + memset (s, 0, len); + free (s); + return ret; +} + +struct salt_type _krb5_arcfour_salt[] = { + { + KRB5_PW_SALT, + "pw-salt", + ARCFOUR_string_to_key + }, + { 0 } +}; |